Founded in 1828 and ISO 9002 registered, Cornell manufactures a complete line of high quality rolling doors, fire doors and grilles for the non-residential construction market. Every Cornell product is built to order to fit opening dimensions. Available options allow doors and grilles to be customized to meet virtually any application requirement. - Material and finish options allow Cornell products to fit, and often contribute to, the visual aesthetics of a building project with materials that can provide enhanced resistance to chemicals, corrosion, moisture, or rust.